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US Patent 7219753 Tool holder for annular core bit

Patent 7219753 was granted and assigned to Hilti on May, 2007 by the United States Patent and Trademark Office.

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Patent abstract

A tool holder (1) for an annular core bit has a bit-side axial stop surface (4) and an end-side axial splined profile (3) extending in a bit direction. The tool holder has an outer thread (5) forming radial spline projections of the splined profile (3) that cooperates with the inner profile (12) of the core bit.

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